1. Central National Herbarium, Botanical Survey of India, Botanic Garden, Howrah 711103, India
2. AJC Bose Indian Botanic Garden, Botanical Survey of India, Botanic Garden, Howrah 711103, India
3. Eastern Regional Center, Botanical Survey of India, Shillong 793003, India
4. Hemvati Nandan Bahuguna Garhwal University, Srinagar, Garhwal 246174, India